Current File : //lib/node_modules/pm2/node_modules/nssocket/lib/common.js
/*
* common.js
*
* (C) 2011, Charlie Robbins, Paolo Fragomeni, & the Contributors.
*/
var fs = require('fs'),
tls = require('tls'),
net = require('net'),
crypto = require('crypto');
exports.createSocket = function (options) {
options = options || {};
options.type = options.type || 'tcp4';
return options.type === 'tls'
? exports.createTlsSocket(options)
: new net.Socket(options);
};
//
// ### function createTlsSocket (options)
// #### @options {Object} Tls options like in tls.js
// #### Should behave like tls.connect, except it just creates the socket like net.Socket
// #### Also has a function called 'connect' that will allow` it to connect to a remote host
// this is a rip of tls.js's connect
//
exports.createTlsSocket = function(options) {
var self = this;
//
// Setup the TLS connection over the existing TCP connection:
//
// 1. Create a new instance of `net.Socket`.
// 2. Create a new set of credentials with `options`.
// 3. Create the TLS pair
// 4. Pipe the TLS pair to the TCP socket
//
var socket = new net.Stream({ type: 'tcp4' });
function setupTlsPipe () {
var sslcontext = crypto.createCredentials(options),
pair = tls.createSecurePair(sslcontext, false),
cleartext = pipe(pair, socket);
pair.on('secure', function() {
var verifyError = pair.ssl.verifyError();
if (verifyError) {
cleartext.authorized = false;
cleartext.authorizationError = verifyError;
}
else {
cleartext.authorized = true;
}
});
//
// Setup the cleartext stream to have a `.connect()` method
// which passes through to the underlying TCP socket.
//
socket.cleartext = cleartext;
cleartext._controlReleased = true;
}
socket.on('connect', setupTlsPipe);
return socket;
};
//
// helper function for createTlsSocket
//
function pipe(pair, socket) {
pair.encrypted.pipe(socket);
socket.pipe(pair.encrypted);
pair.fd = socket.fd;
var cleartext = pair.cleartext;
cleartext.socket = socket;
cleartext.encrypted = pair.encrypted;
cleartext.authorized = false;
function onerror(e) {
if (cleartext._controlReleased) {
cleartext.emit('error', e);
}
}
function onclose() {
socket.removeListener('error', onerror);
socket.removeListener('close', onclose);
socket.removeListener('timeout', ontimeout);
}
function ontimeout() {
cleartext.emit('timeout');
}
socket.on('error', onerror);
socket.on('close', onclose);
socket.on('timeout', ontimeout);
return cleartext;
}
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